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authorTomas Winkler <tomas.winkler@intel.com>2013-04-23 08:38:12 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-04-23 21:29:58 +0400
commit70135393812f4aa10aa891725786a7657064c2fc (patch)
tree1cda8108939b16f7e76e6b25ef009e0f4c71a8ce /drivers/misc
parent0cfee51c7c1fa47d81b3d116df3b53c586aac422 (diff)
downloadlinux-70135393812f4aa10aa891725786a7657064c2fc.tar.xz
mei: reduce flow control only for completed messages
This fixes bug when only first chunk of a large message split by hbuf_max_len is written to the hardware. All the consequent chunks will not get a new credit. A regression introduced by the commit 0ef319c93cebff9f82bdd0cdbb298f2dd00acda8 mei: streamline write complete flow function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mei/interrupt.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 74730713a8d3..5ee2f07c929d 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -356,13 +356,14 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
return -ENODEV;
}
- if (mei_cl_flow_ctrl_reduce(cl))
- return -ENODEV;
cl->status = 0;
cb->buf_idx += mei_hdr.length;
- if (mei_hdr.msg_complete)
+ if (mei_hdr.msg_complete) {
+ if (mei_cl_flow_ctrl_reduce(cl))
+ return -ENODEV;
list_move_tail(&cb->list, &dev->write_waiting_list.list);
+ }
return 0;
}